【 Transcutaneous Electrical Stimulation Unit】 : This unit provides transcutaneous electrical stimulation therapy and is a muscle stimulator, nerve stimulator, and electric massager that controls four (4) transcutaneous electrical stimulation units (electrodes) ear pads to alleviate specific pain. 【 5 Advanced Treatment Modes 】: Our innovative cervical massager offers 5 carefully selected treatment modes to maximize efficacy. Choose the mode that best suits your needs and adjust the intensity according to your comfort level. Very suitable for relieving body pain, exercising muscles, and relaxing the body. In addition, it also serves as a rehabilitation and training tool to enhance strength and endurance. We recommend alternating between different treatment modes to achieve optimal results!.